Bicycle transmission

A pedal displacement actuable multi-speed transmission for bicycles, comprising

• a pedal shaft rotatably displaceable within the pedal shaft hub of a bicycle frame,
• a plurality of drive gears rotatably mounted on said pedal shaft,
• displaceable pawl means for connecting each of said drive gears into selective driving engagement with said pedal shaft,
• a collar member mounted on said pedal shaft for rotation in conjunction therewith and permitted longitudinal displacement therealong,
• camming means said collar member,
• a pivotally mounted shift control member displaceable radially of said pedal shaft disposed in spaced relation with said collar member,
• means mounted on said shift control member and operatively engageable with said camming means in response to a predetermined arc of reverse rotative displacement of said pedal shaft for displacing said collar member longitudinally thereof, and
• means responsive to the positional location of said collar member longitudinally of said pedal shaft for effecting the selected displacement of said pawl means and connection of each of said drive gears into driving engagement with said pedal shaft.

In a multi-speed transmission,

• a rotatably displaceable drive shaft,
• a plurality of drive gears rotatably mounted on said drive shaft,
• means for connecting each of said drive gears into selective driving engagement with said drive shaft,
• collar means mounted on said drive shaft for permitted longitudinal displacement therealong,
• means responsive to a predetermined arc of reverse rotative displacement of said drive shaft for displacing said collar means longitudinally thereof, and
• means responsive to the positional location of said collar means longitudinally of said drive shaft for effecting the selected connection of each of said drive gears into driving engagement with said drive shaft.